US4551349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(pentafluorosulfur)diacetylene polymer therefrom and preparations thereof
Assignee: United States Department of the Navy
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Filing: 1983-12-16
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Granted: 1985-11-05
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Expires: 2003-12-16
Abstract
Abstract A double substitution of pentafluorsulfur on diacetylene by a reaction of diacetylene with pentafluoro sulfur bromide, followed by a dehydrobromineaction with potassium hydroxide. The substituted diacetylene polymerizes in the liquid and gas phases. The polymer is useful as a coating and surface-treatment agent.
Inventors
- 👤 Thomas A. Kovacena
- 👤 Ronald A. DeMarco
- 👤 Arthur W. Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:06
CPC Classifications
C; C08; C08F; C08F38/00; C03; C03C; C03C17/00; C03C17/28; C03C17/32
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
41 words
A method of coating poly bis(pentafluorosulfur)diacetylene on a surface which comprises vaporizing bis(pentafluorosulfur)diacetylene to a gas at a temperature from about 55° to about 75° C. and exposing said surface to said gas until sufficient bis(pentafluorosulfur)diacetylene has polymerized on said surface.
Claim 2
Independent Claim
41 words
A method of coating poly bis(pentafluorosulfur)diacetylene on a surface which comprises vaporizing bis(pentafluorosulfur)diacetylene to a gas at a temperature from about 55° to about 75° C. and exposing said surface to said gas until sufficient bis(pentafluorosulfur)diacetylene has polymerized on said surface.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said temperature is from 60° C. to 70° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |